12
Table 2
DPM Sr90/Ft? Deposited by 1955 Rains and Snows
Month
Chicago
January
February
Pittsburgh
Washington, D.C.
6.6 (1,20)
~18 8%(1,61")
30.0 (1.7h")
March
Uhe9 (2.17")
25.2 (3.0")
58.5 (3.49")
April
88.6 (4.8)")
75.3 (2.33")
May
3947 (2.42")
105.0 (2.66")
120.2 (1.82")
June
~67.8#(2.77")
80.3 (2.82")
July
31.6 (2.63")
78.6 (2.35")
August
13.0 (6.60")
133.0 (6.95")
September
10,8 -(1,57")
8.3 (1,84")
October
27.5 (6.12")
31.7 (3.27")
November
18.2 (1.77")
15.6 (2.79")
December
5.5 (0.47")
709
if
tt
* Based on assay of two thirds of total monthly rainfall,